Car-coupling.



S. Pf BUSH.

CAR CDUPLING.

` APPLICATION FILED AER. Io. IQIs,

MISIIIW 2 SHEETS-SHEET l.

Patented DMI, 4, 1917/5,

S. P. BUSH.

CAB COUPLING.

nPPucATioN FILED APK. v10. 1916.

minted ma. 4, 119W.

2 SHEETS-SHEET 2.

WJ NESSES SAMUEL P. BUSH, OF COLUMBUS, OHIO.

CAR-COUPLING'r.

Speccation of Letters Patent.

Patented Dec. 4, 191W..

Application filed April 10, 1916. Serial No. 90,176.

To all whom it may concern.' y Be it known that l, SAMUEL l). BUSH, a citizen of the United States, and a resident of Columbus, in the county of Franklin and State of Uhio, have invented certain new and useful Improvements in Car-Couplings; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My inventionrelates to an improvement in car couplings, theobject being to provide a construction that will combine simplicity with maximum strength of parts,

also that will provide for greater certainty of some operations under all conditions than has heretofore been possible, and it consists in the parts and combination of parts and in the details of construction as will he more fully described and pointed out in the claims. Y

In the accompanying drawings, Figure 1 is a view in section through a draw head and knuckle, the locking block and lifting lever for the latter being in elevation; Figs. 2, 3 and 4 are similar views showing the successive positions of the locking` block and knuckle during the upward movement of A30 the locking block; Fig. 5 is a similar view showing the knuckle in a partly open posi tion and the locking block resting on the tail of the knuckle; Figs. 6 and 7 are views of the knuckle; Figs. 8, 9 and 10 are views 0f the locking block; Fig. 11 is a view in perspective of the coupling, the guard arm side of the head being broken away, and Fig. 12 is a view in section through the guard arm.

14 represents the draw head of the coupling provided with ears 15 having oppositely disposed lugs 16 which are integral with the ears 15 and head 14, the outer margin of the lugs being circular as shown in .45 ing. i1.

The drawehead is provided intermediate the ears with the stops 17a against which the shoulders 18a on the knuckle abut when the latter is in closed position, thus assisting (i the other parts to be hereinafter referred to in taking the bufng stresses. The knuckle 19 is recessed as at 20, on its upper and lower faces, to receive the lugs 16 on the ears of the draw-head, and the said recesses 20 are so located and of such shape .that the wall 21 thereof bearing against the lugs 16, and the shoulders 18a bearing against the stops or abutments 17a take, as before explained, the bufling stresses. The rear inner surface 18 of the wall 21 of the recess, terminates, in a position to take part. of the pulling stresses, thus relieving the pivot pin of much stress in pulling.

The ears 15 and lugs 16 are provided with a pin hole, and the knuckle 19 is provided with a corresponding hole for the passage of ihe (pin which locks the knuckle to the drawiea The knuckle 19 is provided with a tail 22, the upper and lower faces of which are inclined upwardly and rearwardly as shown in Fig. 7. its outer edge with a rib 23 adapted to engage a shoulder or surface on the locking block for lifting and supporting the latter as will be hereinafter more fully explained.

rllhe locking block 24 which is shown detached in Figs. 8, 9 and 10, is provided with a depending leg 25, terminating in a toe 26, which projects horizontally, or at a slight inclination from the lower end of the leg. The underside of this leg, or the toe at the end of the leg, has an inclined surface as at 27, extending about half the length of the toe, and beyond this, the lower face of the toe is approximately horizontal. The lock ing block 24 is provided with a shoulder or surface 28 adapted to be engaged by the rib 23 on the. knuckle tail, and it is also provided at its upper end with a horizontally projecting lip 29 adapted to bear against The upper face is provided at the ribs 30 formed on the inner face of the Y side wall of the draw-head. The draw-head is provided in its throat at one side with an inclined seat or shelf 31 extending in the direction of the length of the coupling and adapted to support the locking block in its lock set position.

Fivoted to a bracket 32 depending from the guard arm of the draw-head, is the lever 33, the rounded free end of which is adapted to engage the lower face of the toe 26 of the locking block 24, for lifting the same, the lower end of the coupling head having an opening therein for the passage of the lever 33. This lever is connected with a pull-rod 34 which in turn will be connected with an actuating lever not shown.

Fig. 1 shows the locking block in its normal locking position; Fig. 2 shows it slightly raised, but not enough to release the knuckle; Fig. 3 shows 'it resting on the shoulder 3l or inset position; Fig. e shows it in its highest position with the knuckle thrown to open Vposition and F ig. 5 shows the knucvkle partly closed with the locking block resting thereon.

tIn describing the action of the lock vin going onto its set, I will first describe the sliding action due to the inclination of the surface 27, as it can goonto its set in this way, and then refer to the action of the toe 26 in tiltingthe lock, the latter adding to the positiveness of the operation.

lllhen the knuckle is closed and locked, the locking block rests well down in the head, so that the portion of the block above shoulder 28 is in the plane of the tail of the knuckle. To release the knuckle, a pull is Yexerted on rod which aetuates lever' 33v in a direction to carry the free end of the latter., into contact with the lower face of the extension 25 of the locking block. As the lever-is moved, its free end enO'ages and slides on the inclined surface 2T ofthe lockingblock thus tilting the locking block from the position shown in Fig. 2 to that shown inFig. 3, and in so doing the lower inclined surface 27 of the locking block slides on the end of the lever 83, thus bringing the lower edge of the extension 25 of the block in the plane of and over the lock set 3l. If forany reason the block fails to slide into position over its lock set seat 3l, a continned upward movement of the lever 33 will carry the toe 2G of the extension 25 of the lockyinto engagement with the tail of the knuckleV and thus positively tilt the lock until the lower edge of the extension is over the seat 3l. lBy now releasing the lever 33, the locking block will settle down'and rest `on its seat 3l. If the knuckle be now thrown to open. position by any means other than the lever 33, the rib 23 on the top'of the knuckle tail will, during said opening movement, come incontact with the shoulder 2S on the locking block, at one side of the center of gravity of the latter, thus elevating the block and causin0` it to tilt or swing away from Lthe seat 3l. This swinging or tilting movement is limited by the end of the toe 2G contacting with the surface 85 of the locking 1nlcek housing. This surface 35, is continued up at the rear in the form of a, beveled or inclined extension 85a, and at the, extreme rear b v the narrow strip or surface 35h against which th toe bears and prevents any part or edge of the locking block from moving over into the plane of the top edge of the surface 35. By now closing the; knuckle, after the saine has been wholly onpartly opened, the lock continues to ride on the rib 23 andl is gradually lowered until the knuckle swings clear of the locking 'block thusl perinitting'the latter to, drop. into position shown in Figxl and'lock theV knuckle in vits closed position.

If it be desired to throw the knuckle to toe 26 of the extension 25 of the locking block engages the lower inclined or cam face of the knuckle tail, and ay continued movement willA then forcibly move the locking block to its highest position and throw the knuckle to its open position. During this movement the upper end of the locking block will tilt inwardly oi toward the left. thus causing its lip 29 to engage and ride on the ribs 30, while the front and rear walls of the housing prevent any endwise or vibratorymovement of the block.

YIt will be observed that the locking block is wholly in'closed within the housing and that provision is made for guiding both ends of the locking block in its upward and downward movements.

Again the lock set being at one side of the housing, and extending in the direction ofthe length of the draw-bar, the locking block cannot be dislodged from its lock set position by impacts or blows incident to coupling.

y The means for tilting the lockingblock andimoving it to its lock set position are simpleand positive. Then the knuckle is closed, the lock descends to its lowest position in locking the knuckle and is firmly supportedby the walls of the housing, and with the lock in this position, the abutments under compressive stresses on the knuckle .and draw-head co-act, as do the surfaces 19 of the knuckle and the surfaces of the lug 1G under pulling stresses, thus relieving the pivotrpin, to a very large degree, from stresses. I

While I prefer to actuate the locking block from belowas described, it may be provided, as shown in Fig. 9 with means for its attachment to a lifting chain.

-It is evident that` many slight changes might be. resorted to in the relative ar angement.r of parts shown `and described without departing from the spirit and scope of my inventioinhenceI would have it understood that I 'do ynot wish to confine myself to the exact construction and arrangement of pai'ts shown and described, but,-

I -Iaving fully described my invention what I claim as new and desire to secure by Letters-Patent, is l 1. In a car coupling, the combination of a draw head having integral lugs for supporting and taking the pulling and bulling stresses of the knuckle, and also provided with stops intermediate the lugs, av knuckle having recessed seats to receive the said lugs andadaptedto turnen the latter, and also havingV shoulders to engage the said stops, and a locking block for the knuckle.

2. In a car coupling, the combination of a draw head having a lock set seat, a knuckle, a locking block having a depending extension terminating in a toe the lower face of which is inclined throughout a por tion of its length, the upper face of the said toe adapted when the locking block is lifted., to engage the underside of the tail of the knuckle, whereby the locking block will be tilted in a direction away from the knuckle and over the seat, and which by its continued upward movement throws the knuckle to open position, and a lever to engage the inclined underliace of the toe for lifting the locking block and also for assisting in seating the same.

3. rlhe combination of a draw head, a knuckle and a locking block the latter termij nating in a toe the lower face of which is inclined throughout a portion of its length and is approximately horizontal throughout the remaining portion, the draw head having surfaces above and below the knuckle for guiding both ends of the locking block and also provided with a rest for the locking block which conforms in shape to the lower face of the toe, and on which said lower face rests when the locking block lis in its lowermost position.

4f. In a car coupling7 the combination of a draw head having a lock set seat, a knuckle and a locking block having a depending eX- tension terminating in a toe, which when the block is lifted engages the underside of the tail of the knuckle and tilts the block in a direction away from the knuckle and over the seat, and which also by its continued upward movement throws the knuckle to open position.

ln testimony whereof, l have signed this specification in the presence of two subscribing witnesses.

SAMUEL l). BUSH, Witnesses:

CARL F. DIERKER, C. A. KELLEY.

Copies of this patent may Toe obtained for ve cents each, by addressing the Commissioner of Patents,

' Washington, lll. 

